CN201135260Y - Automatic withdrawing mechanism of drawer slide rail - Google Patents

Abstract

An automatic retracting mechanism for a drawer slide consists of a guiding member, a joint member, two elastic members and a hook member. The guide component is arranged on the inner wall of an object, the hook bolt piece is arranged on the outer wall of another object in the opposite direction, the other object is pulled outwards, the sliding piece of the joint component and the convex column at the bottom of the swinging piece move along the guide column and the guide groove respectively, the elastic component is stretched, when the convex column moves to the inclined clamping part, the swinging piece is pushed laterally by the clamping teeth of the hook bolt piece, the swinging piece rotates and is clamped at the clamping part to be inclined, and the hook bolt piece loses the clamping of the swinging piece and is separated; when another article is inserted, the latch of the hook member touches the inner wall of the hook groove of the swing member and is accommodated in the hook groove, and the swing member is driven to rotate and swing to release the latch, so that the elastic member is contracted and the joint member and the hook member are driven to return along the straight line part.

Description

Automatic retraction mechanism for drawer slides

technical field

The utility model relates to a drawer slide rail, in particular to an automatic retracting mechanism for the drawer slide rail, which enables the drawer to be automatically retracted at the end of the stroke during the homing process.

Background technique

According to the occasions where we use slide rails, such as drawers, because they can be pulled to extend the length, and can be retracted to the original length. Therefore, drawer slides have widely existed around people's lives.

In addition to the drawer slide must have the function of pulling out the drawer, when pushing the drawer in, it is better to use a method that saves manpower. Therefore, many years of research and development by the industry, there are various designs of automatic return or retraction mechanisms, so that when the user pushes in the drawer, the drawer can slide naturally through the slide rail without having to push it to the bottom. in and turned off.

For example, U.S. Patent No. 5,207,781 is an example. This case provides a closing device that moves a drawer in the furniture body to a fully inserted position. (titlable member), a guide groove (guidetrack), and a spring to form a rail member (rail member), the rail member is installed on the inner wall of the furniture body, and a pin member (pin member) is attached to the The outer wall of the drawer. The guide groove is connected by a front end of a rectilinear portion to an arcuate portion, for the two guide rods (guide rods) extending from the bottom of the deflectable member to be socketed and slide back and forth, and The two ends of the spring are respectively connected to the deflectable part and the track part. The deflectable part is provided with a catch slot for the accommodation of the bolt, and an oblique side edge is formed on the outside.

When the drawer is pulled out, the bolt pulls the deflectable member to move outward along the guide groove, and the spring is stretched; but when the deflectable member moves to the arched part of the guide groove, it becomes oblique, so that the bolt can Through the inclined side edge, the drawer is separated from the deflectable member, so that the drawer can continue to be pulled out. At this time, the deflectable part is located in the arched part, so that when the drawer is pushed in, the bolt enters from the oblique side edge and is accommodated in the buckle groove. When the external force pushes the two guide rods of the deflectable part into the At the straight line portion of the guide groove, the spring shrinks, and pulls the deflectable member and the bolt to return to their original positions, so that the drawer can automatically return to its original position and close the opening of the furniture body.

Although this prior art can achieve the expected automatic recovery effect, its obvious disadvantages are:

(1) In this prior art, the linear part and the arched part of the guide groove are L-shaped. Therefore, when the deflectable part is separated from the bolt, the two guide rods are respectively located in the straight part and the arched part. At this time, the pulling force of the spring will generate a large pulling force on the guide rod located at the arched portion, and in order to resist the pulling force, it often causes the guide rod to break and the slide rail is thus damaged.

(2) Due to the height difference between the straight part and the arched part in this prior art, when the deflectable part is located at the arched part, the relative position between the straight part and the straight part of the guide groove during travel will change, so that the spring moves from the straight The horizontal stretch becomes oblique stretch, which in turn affects the effect of regression.

(3) In particular, in order to avoid the abnormal detachment of the deflectable member and the bolt in the prior art, an elastic pressing member is protruded in front of the deflectable member. When the deflectable member is out of the desired position, the bolt is pushed inwards to squeeze and pass over the elastic pressing member. However, the vertical extrusion method often causes the elastic pressing part to break unexpectedly, so that the deflectable part and the bolt cannot be fastened again, and then loses the function of automatic return, which is really a fly in the ointment.

In view of this, the applicant has been engaged in the research and development, production and sales of slide rails for many years, and devoted himself to research in order to improve the many shortcomings of the aforementioned prior art. The applicant once proposed a solution, such as the Chinese Taiwan Patent Announcement No. M287625 The "Automatic Retracting Mechanism for Drawer Slides" (corresponding to US Patent Publication No. US2007-0132346A1) to overcome the structural defects of the prior art, but this case is used for heavy-duty drawer slides with large loads. As a result, if the structure is to be applied to medium or light drawer slide rails with relatively small loads, the space configuration of related components needs to be changed. Therefore, based on the above-mentioned requirements, the applicant hopes to find another way. After repeated experiments and tests, he created this The utility model relates to an automatic retracting mechanism of a drawer slide rail.

Utility model content

The main purpose of the utility model and the effect of the desired gain are to provide an automatic retracting mechanism for the drawer slide rail. Stretch or retract synchronously, so as to achieve the purpose of stable movement. Furthermore, the two elastic components are arranged in parallel and respectively connected to the base and the sliding part, so that stable and uniform linear elasticity can be obtained. In addition, the linear portion and the inclined locking portion of the guide groove of the present invention are linear oblique bifurcated tracks. In particular, the protruding column at the bottom of the oscillating member is in the shape of a long column, which has better strength and will not break.

In order to achieve the above-mentioned purpose, the technical means adopted by the utility model is to provide an automatic retracting mechanism of the drawer slide rail, which is characterized in that it includes:

A guide member, which is a guide post extending integrally in front of a base, and a guide groove is opened on the surface of the guide post, which is composed of a straight line part and an oblique and staggered locking part in front of it;

A joint member, which has a slider, the bottom surface of the slider spans a column groove, which is sleeved on the guide column, and a swinging piece is pivotally connected to the chamber above the column groove, and a long bar protrudes from the bottom surface of the swinging piece Shaped post, which is sleeved in the guide groove, and the swinging member is provided with a hook groove towards the platform of the sliding member;

Two elastic members are respectively arranged in two spring grooves across and parallel to the bottom surface of the base, and their two ends are respectively connected to the base and the sliding member;

A hook bolt, the side of which is corresponding to the hook groove of the swinging member, and at least one locking tooth is protruded;

So that the guide member can be installed on the inner wall of an article, and the hook bolt is installed on the outer wall of another article in an opposite direction, and the other article is pulled outward, so that the sliding member and the boss are respectively along the guide. The column and the guide groove move to make the pair of elastic members stretch. When the convex column moves to the inclined locking part, the swinging piece is pushed laterally by the locking teeth of the hook bolt, so that the swinging piece rotates and locks. At the catch part, it presents an inclined shape, so that the hook part loses the catch of the swing part and separates; when another article is inserted, the catch teeth of the hook part touch the inner wall of the hook groove of the swing part, and are accommodated in the In the hook groove, and prompt the swinging member to rotate and align to release the latch, so that the pair of elastic members shrink, and drive the joint member and the hook bolt to return along the straight line.

Wherein the front and rear end walls of the hooking groove are respectively a hooking end and a hooking stop, and the locking teeth of the hooking bolt are two protrusions, and the size of the two locking teeth corresponds to the hooking groove, forming a tightly fastened relationship.

Wherein the rear section of the linear part of the guide groove has an inclined fork groove, when the joint member is at the initial position, the hook bolt is moved inward, so that the latch teeth touch and push the swing member, and make it rotate, so that The protruding post on the bottom surface of the oscillating part falls into the fork groove, so that the claw hooks the outer end of the hook groove or is buckled into the hook groove, and then the hook bolt is pulled out to move the engaging member to the end position in front of the guide post And positioning.

It further includes a buffer component, the cylinder of hydraulic type is fixed in the predetermined accommodation groove on the bottom surface of the base, and a telescopic rod extends from the front of the cylinder, which is connected to the sliding part.

The guide post is provided with a limit groove horizontally, and a stop tenon protrudes from the column groove on the bottom surface of the sliding part which is socketed with the guide post. .

Wherein the top surface of the hook bolt has a tenon and a connection hole, and the movable end of the side of the two latches is an upwardly tilted lap joint, when the hook bolt is retracted toward the guide member, The raised overlapping portion touches a guiding inclined surface at the outer end of the guide column, so as to facilitate guiding the hooking bolt to enter the platform of the sliding component below the swinging component.

Wherein the upper and lower edges of the guide post respectively protrude a sliding tenon, and the top of the column groove of the sliding part corresponds to the two sliding tenons respectively. Guide column up displacement.

Wherein the article refers to the inner wall of the furniture body or a fixed rail, and the other article refers to the outer wall of the drawer or a movable rail; and the guide member, the joint member and the elastic member are installed on a fixed rail, and the The bolt is installed on a movable rail, and a relay rail is indirectly installed on the two rails.

Wherein the elastic member is a spring, and the trumpet-shaped fixed ends of the two ends are respectively connected to the base and the first and second joints at the end of the slider.

Wherein the front end of the guide post is combined with an elastic buffer body, which is used as a buffer when the hook bolt touches.

The beneficial effects of the utility model are:

The automatic retracting mechanism of the drawer slide rail of the utility model has the function of gaining the effect that the sliding part of the joint member and the convex post on the bottom surface of the swinging part are respectively sleeved on the guide post and the guide groove, so that they can be stretched synchronously or Retract, so as to achieve the purpose of stable movement. Furthermore, the two elastic components are arranged in parallel and respectively connected to the base and the sliding part, so that stable and uniform linear elasticity can be obtained. In addition, the linear portion and the inclined locking portion of the guide groove of the present invention are linear oblique bifurcated tracks. In particular, the protruding column at the bottom of the oscillating member is in the shape of a long column, which has better strength and will not break.

Description of drawings

For further revealing the concrete technical content of the present utility model, please refer to accompanying drawing at first, wherein:

Fig. 1 is the three-dimensional exploded view of the automatic retracting mechanism of the drawer slide rail of the present invention;

Fig. 2 is a three-dimensional exploded view of another perspective of the utility model;

Fig. 3 is the perspective view after the utility model is assembled;

Fig. 4 is a perspective view of the joint member of the present invention being pulled apart relative to the guide member;

Fig. 5 is a perspective view of the automatic retracting mechanism of the drawer slide rail of the present invention assembled in a multi-rail drawer slide rail;

Fig. 6a to Fig. 6c are the action flow diagrams of the guide member, the engaging member and the hook bolt in the normal state of the present invention;

FIG. 7 is an operation diagram of the guide member, the engaging member and the hook bolt in an abnormal state of the present invention.

Detailed ways

As shown in Figures 1 to 4, basically, the automatic retracting mechanism of the drawer slide rail of the present invention is composed of a guiding member 1, an engaging member 2, two elastic components 3, and a hook bolt 4 . Wherein, the automatic retracting mechanism is used for furniture items comprising a furniture body and a slidable drawer in the opposite direction, the drawer can enter and pull out of the furniture body, so that the drawer can be moved to Fully inserted position inside the furniture body.

Wherein, the guide member 1 is arranged on the inner wall of the furniture body, such as a fixed rail 71 (as shown in FIG. 5 ) of a drawer slide rail 7, so as to guide the joint member 2 to slide on it. use. As shown in the figure, the guide member 1 is integrally extended in front of a base 11 with a guide post 12, the upper and lower edges of the guide post 12 respectively protrude a sliding tenon 121, and a guide groove 13 is opened transversely on the top surface. , which is composed of a straight line portion 131 and an obliquely staggered locking portion 132 in front thereof. In order for the base 11 to be fixed on the fixed rail 71, a plurality of coupling holes 111 are provided at appropriate positions on its bottom surface for conventional connection components, for example, screws pass through the preset holes of the fixed rail 71 and are locked in the coupling holes 111. The guiding member 1 is fixed on the rear end of the fixing rail 71 .

In addition, a spring groove 112 is formed transversely on the bottom surface and the lower side of the base 11 respectively, for accommodating and passing a pair of elastic components 3 described later. A joint portion 113 , such as a neck, serves as the positioning of one end of the elastic component 3 , making it stretchable and retractable. Furthermore, the bottom surface of the base 11 is further provided with an accommodating groove 114, which is for accommodating a buffer member 5, such as the cylinder body 51 of the hydraulic telescopic device, and the rear end of the accommodating groove 114 protrudes at least one tenon inward. 115 , which is against the cylinder body 51 so that the cylinder body 51 can be kept in position and cannot be dislodged from the accommodating groove 114 . Preferably, the accommodating groove 114 is adjacent to the spring groove 112 below the bottom surface of the base 11 , so that the telescopic rod 52 extending from the front end of the barrel 51 can extend into the limiting groove 122 below the top surface of the guide post 12 .

The joint member 2 is formed by pivotally connecting a swinging member 22 in the middle of a sliding member 21. The bottom surface of the sliding member 21 is provided with a column groove 211 transversely, which is sleeved on the guide post 12. In order to avoid the separation of the two, the post The top of the groove 211 corresponds to the two sliding tenons 121 and is recessed with a tenon groove 212 respectively, which is for the socketing of the sliding tenons 121 , so that the sliding member 21 can stably guide the lateral displacement of the column 12 . A chamber 213 is formed above the column groove 211 , and a shaft hole 214 is defined for receiving the swinging member 22 and pivotally connecting with a pivot 221 . A strip-shaped post 222 protrudes from the bottom of the swinging member 22 so as to be sleeved in the guide groove 13 , so that the swinging member 22 can slide forward and backward in the guide groove 13 . In order to prevent the sliding member 21 from coming out of the front end of the guide post 12, a retaining tenon 215 protrudes downwards from the inner top wall of the post groove 21 corresponding to the position of the aforementioned limiting groove 122, and its end has a buckle groove 216. It is combined with the tenon 521 at the front end of the telescopic rod 52 , so that when the slider 21 moves, the telescopic rod 52 of the buffer member 5 will be extended or retracted synchronously. Therefore, when the tenon 215 touches the front end of the limiting groove 122 , it means that the joint member 2 is limited to move forward.

In particular, the upper and lower sides of the bottom surface of the slider 21 correspond to the two spring grooves 112 respectively to provide a concave second engaging portion 217, such as a neck, to serve as the positioning of the other end of the elastic component 3, so that the elastic component 3. With the movement of the sliding member 21, it has the elasticity of stretching and shrinking. In particular, the front and rear ends of one side of the swing member 22 respectively have a hook groove 225 and a hook stop 224 that are still engaged in the swing member 22, so that a hook groove 225 is formed therebetween.

The two elastic members 3 are arranged in parallel in the spring grooves 112 on the upper and lower sides of the base 11, and the fixed ends 31 at both ends, such as trumpet-shaped fastening ends, are respectively connected to the first and second ends of the base 11 and the ends of the slider 21. The second engaging portions 113 , 217 enable the sliding member 21 to elastically displace on the guide post 12 . Wherein, when the two elastic members 3 are implemented, springs are preferred, and since two elastic members 3 arranged in parallel are used, stable and uniform linear expansion and contraction elasticity can be obtained.

The hook bolt 4 is fixed on the rear end of the movable rail 72 of the drawer slide rail 7. It is a slightly L-shaped sheet body, and its rear end protrudes toward the hook groove 225 with two locking teeth 41, 42, so as to fit in the guide groove. When the straight portion 131 of the guide groove 13 is located, the two locking teeth 41, 42 are locked in the hook groove 225 of the swing member 22, and when the inclined locking portion 132 of the guide groove 13 is located, the two locking teeth 41, 42 are disengaged from the The hook groove 225 of the swing member 22 . The relative movement of the engaging member 2 and the hook 4 will be described in detail later.

The top surface of the hook bolt 4 has a tenon 43 and a connecting hole 44 for inserting into the preset holes and screws at the rear end of the movable rail 72 to pass through and lock, so that the hook bolt 4 is fixed on the movable rail 72 rear end. In particular, the movable end of the sides of the two locking teeth 41, 42 is an upwardly tilted overlapping portion 45. When the movable rail 72 retracts toward the guide member 1, the elevated overlapping portion 45 will First touch a guide slope 123 at the outer end of the guide post 12, and then enter the platform of the sliding member 21 below the swinging member 22, so that the locking teeth 42 hit the hook 224 placed on the platform and arranged obliquely, so that Make the protruding post 222 guide in the locking portion 132 and align with the straight line portion 131 to disengage from the locking. In addition, the front end of the guide post 12 is combined with an elastic buffer body 23 , which acts as a buffer when the hook member 4 touches, so as not to damage the guide post 12 .

The buffer member 5 accommodates and positions a hydraulic cylinder 51 in the accommodation groove 114 of the guide member 1 , and the telescopic rod 52 in front of it is connected to the slide 21 to provide a buffer function.

In particular, in order to close the rear opening of the base 11, the utility model further includes an end seal 6, which is a connecting piece 62 extending laterally on one side of the end piece 61, and a protrusion 63 protruding from the bottom surface of the connecting piece 62 , which has a plurality of grooves 64, and ribs 117 are correspondingly arranged in the frame body 116 between the two first joints 113 at the bottom of the base 11, so that after the insertion of these grooves 64, the The end seal 6 is fixed on the rear end of the base 11 .

Please refer to Fig. 5, which is to assemble the automatic retracting mechanism of the present utility model on a multi-rail drawer slide rail 7, wherein the guide member 1, the engaging member 2 and the elastic member 3 are arranged on the fixed rail 71, and the hook bolts 4 is located at movable rail 72, and two rails are indirectly equipped with a relay rail 73.

Please refer to Fig. 6a to Fig. 6c, when the drawer is to be pulled out, the swinging member 22 is located on the straight line portion 131, and the two locking teeth 41, 42 of the hook bolt 4 are engaged in the hook groove 225 of the swinging member 22 (as shown in FIG. 6 a ), and pull the swinging member 22 and the sliding member 21 to move outward, so that the two elastic members 3 located between the base 11 and the sliding member 21 are gradually stretched. When the swinging member 22 and the hooking member 4 move between the straight portion 131 and the engaging portion 132, the locking tooth 42 is still engaged in the hook groove 225 of the swinging member 22, while the other locking tooth 41 is separated from the hooking portion 225 of the swinging member 22. The hook groove 225 overlaps with the hook end 223 (as shown in FIG. 6b ).

At this time, if the drawer is continuously pulled out, the hook groove 225 of the swinging member 22 will be rotated by the lateral thrust of the special shape of the two locking teeth 41, 42, so that the protrusion 222 at the bottom will be locked in due to the offset. The inclined engaging portion 132 makes the swinging member 22 rotate back, and fits and locates on the engaging portion 132 to present an inclined shape. At this time, the hook bolt 4 is separated from the swinging member 22 due to the loss of engagement, so that it can be continuously pulled outward together with the movable rail 72 and the drawer (as shown in FIG. 6c ).

On the contrary, when the drawer is inserted, the swinging member 22 is located at the inclined catch portion 132, and the rear latching tooth 42 of the hook bolt member 4 touches the detent 224, thereby releasing the catch, and making the hook of the swinging member 22 The stopper 224 swings upwards on the same side, and then the two locking teeth 41, 42 are tightly fastened in the hook groove 225. At this time, the elastic member 3 shrinks, and drives the joint member 2 and the hook bolt 4 to return to the starting position, so as to obtain the expected automatic retraction function.

Please refer to FIG. 7 , which discloses a schematic diagram of the guide member 1 and the hook bolt 4 in an abnormal state, that is, if the joint member 2 fails to wait for the return of the hook bolt 4 at the end position (locking portion 132 ), Instead, it is in the straight line portion 131. At this time, the hook bolt 4 is continuously pushed inward until the latch 42 touches and pushes the hook end 223, so that the hook end 223 moves upward, and the protrusion 222 on the bottom surface Fall into the preset fork groove 133 in the rear section of the linear groove 131, and present an inclined state, so that the rear latch 42 can catch the hook end 223, or the two latch teeth 41, 42 can be buckled into the hook groove 225. Then, pull the hook bolt 4 outwards, so that the linking piece 21 and the swinging piece 22 are moved to and positioned at the outer ends of the guide post 12 and the guide groove 13, and the abnormal state can be eliminated.

Therefore, through the implementation of the present utility model, its effect has the following numbers:

(1) The protrusions on the bottom surface of the sliding part and the swinging part of the connecting member of the utility model are respectively sleeved on the guide post and the guide groove, and can be stretched or retracted synchronously, thereby achieving the purpose of stable movement. Furthermore, the two elastic components are arranged in parallel and respectively connected to the base and the sliding part, so that stable and uniform linear elasticity can be obtained.

(2) The linear portion and the inclined locking portion of the guide groove of the present invention are not L-shaped rails, but basically can still be regarded as a straight line and oblique bifurcated rails. In addition, the protruding posts at the bottom of the oscillating member of the present invention are in the shape of elongated columns, which have better strength and will not break.

(3) When the joint member of the utility model is disengaged from the hook bolt, the swinging member is caught in the inclined catch portion, and the sliding member is still oriented without deviation, and the two elastic members are linear, and The non-deflection shape prevents the elastic member from producing a biased component force, so it will not affect the automatic retraction effect of the hook and bolt.

(4) The hook bolt of the utility model is specially designed as two locking teeth, which has a large tolerance, which can cope with the deviation generated during the installation of the drawer slide rail. In addition, if the guide member and the hook bolt of the utility model are in an abnormal state, the hook end of the oscillating piece can be touched and pushed by the rear locking teeth of the hook bolt, so that after it is buckled with the hook end, it can move toward the hook end. By pulling it out, the abnormal state can be eliminated. It is truly a masterpiece that has never been seen in similar items.

Claims (10)

1. An automatic retraction mechanism of a drawer slide rail, characterized in that it comprises: A guide member, which is a guide post extending integrally in front of a base, and a guide groove is opened on the surface of the guide post, which is composed of a straight line part and an oblique and staggered locking part in front of it; A joint member, which has a slider, the bottom surface of the slider spans a column groove, which is sleeved on the guide column, and a swinging piece is pivotally connected to the chamber above the column groove, and a long bar protrudes from the bottom surface of the swinging piece Shaped post, which is sleeved in the guide groove, and the swinging member is provided with a hook groove towards the platform of the sliding member; Two elastic members are respectively arranged in two spring grooves across and parallel to the bottom surface of the base, and their two ends are respectively connected to the base and the sliding member; A hook bolt, the side of which is corresponding to the hook groove of the swinging member, and at least one locking tooth is protruded; So that the guide member can be installed on the inner wall of an article, and the hook bolt is installed on the outer wall of another article in an opposite direction, and the other article is pulled outward, so that the sliding member and the boss are respectively along the guide. The column and the guide groove move to make the pair of elastic members stretch. When the convex column moves to the inclined locking part, the swinging piece is pushed laterally by the locking teeth of the hook bolt, so that the swinging piece rotates and locks. At the catch part, it presents an inclined shape, so that the hook part loses the catch of the swing part and separates; when another article is inserted, the catch teeth of the hook part touch the inner wall of the hook groove of the swing part, and are accommodated in the In the hook groove, and prompt the swinging member to rotate and align to release the latch, so that the pair of elastic members shrink, and drive the joint member and the hook bolt to return along the straight line. 2. The automatic retracting mechanism of the drawer slide rail according to claim 1, wherein the front and rear end walls of the hook groove are respectively a hook end and a hook stop, and the latching teeth of the hook bolt protrude two , the size of the two latches corresponds to the hook groove, forming a tightly fastened relationship. 3. The automatic retracting mechanism of the drawer slide rail according to claim 1, wherein the rear section of the linear part of the guide groove has an inclined fork groove, and when the engaging member is at the initial position, the hook bolt Move inwards so that the locking teeth touch and push the swinging piece, and make it rotate, so that the protruding post on the bottom surface of the swinging piece falls into the fork groove, so that the locking teeth can hook the outer end of the hook groove or buckle into the hook groove. Then the hook bolt is pulled out, so that the engaging member is moved to the terminal position in front of the guide post for positioning. 4. The automatic retracting mechanism of the drawer slide rail according to claim 1, characterized in that it further comprises a buffer member, the hydraulic cylinder of which is fixed in a predetermined receiving groove on the bottom surface of the base, and A telescoping rod extends from the front of the barrel, which is connected to the sliding part. 5. The automatic retracting mechanism of the drawer slide rail according to claim 1, wherein the guide post is provided with a limiting groove in the transverse direction, and a stopper is protruded from the bottom column groove of the sliding part which is socketed with the guide post. Tenon, it is accommodated in the limit groove, and uses its two ends as the limit of movement. 6. The automatic retracting mechanism of the drawer slide rail according to claim 1, wherein the top surface of the hook bolt has a tenon and a connecting hole, and the movable end of the side of the two locking teeth is a The upwardly tilted overlapping portion, when the hook bolt is retracted toward the guide member, the raised overlapping portion touches a guide inclined surface at the outer end of the guide post, so as to guide the hook bolt into the swinging member platform for the slide below. 7. The automatic retracting mechanism of the drawer slide rail according to claim 1, wherein the upper and lower edges of the guide post protrude outwards respectively with a tenon, and the top of the column groove of the slider corresponds to the two tenons respectively A mortise is recessed, which is used for the socket of the sliding tenon, so that the sliding part can stably guide the upward displacement of the column. 8. The automatic retracting mechanism of the drawer slide rail as claimed in claim 1, wherein the article refers to the inner wall of the furniture body or a fixed rail, and the other article refers to the outer wall of the drawer or a movable rail; The guide member, joint member and elastic member are installed on a fixed rail, while the hook bolts are installed on a movable rail, and a relay rail is indirectly installed on the two rails. 9. The automatic retracting mechanism of the drawer slide rail according to claim 1, wherein the elastic member is a spring, and the trumpet-shaped fixed ends at both ends are respectively connected to the base and the end of the slider. Second junction. 10 . The automatic retracting mechanism of the drawer slide rail as claimed in claim 1 , wherein the front end of the guide post is combined with an elastic buffer body, which acts as a buffer when the hook is touched. 11 .

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